Razor-blade sharpener



June 23, 1925. 1,543,386 J. HOLTZMAN RAZOR BLADE SHARPENER Filed Feb.15. 1922 I :Hi

J/ f m U 7 l/v/am ATTORNEY Patented June 23, 1925.

PATENT OFFICE.

JOHN HOLTZMAN, OF NEW YORK, N. Y.

' name-nuns snanrmmn.

Application filed February To all whom it may concern: 1 I

Be it known that I, JOHN HOLTZMAN, a citizen of the United States, andresident of the borough of Manhattan, city of New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in a Razor-Blade Sharpener, of which the following is aspecification. I

This invention relates to a razor blade sharpener. Its object is theproduction-of such a sharpener, whereby a blade to be sharpened caneasily be attached and detached therefrom. A second object of theinvention is, to provide a sharpener that comprises means for enclosingtherewith a plurality of razor blades and the parts of a razor bladeholder. A third object of the invention is the production of a sharpenerthat contains a blade holder with one of the parts thereof magnetized,to automatically clamp a blade thereto, when said part is swung up toremove the blade from the sharpener.

In the accompanying drawings Fig.- 1 represents a top plan view of oneform of the razor blade sharpener with a portion thereof broken away,exemplifying the invention; Fig. 2 shows a bottom plan view of Fig. 1with a portion broken away; Fig. 3 indicates a section of Fig. 1 -on theline 3, 3; Fig. 4 shows a section of Fig. 1 on the line 4, 4; Fig. 5represents a section of Fig.

- 1 on the line 5, 5; Fig. 6 shows a section of Fig. 1 on the line 6, 6;Fig. 7 indicates a section of Fig. 4 on the line 7, 7 and Fig. 8 shows asection of Fig. 4 on the line 8, 8.

' The razor blade sharpener is indicated with a casing, that comprisesthe side walls 20, 21 each with the curved to edge 24 and the curvedbottom edge 25. top cover is indicated in its entirety by the letter Aand v a bottom cover is indicated in its entirety by the letter B. Thesaid covers are hinged to each other by means of the hinge pin 26,

J to which the sides 20 and 21 are fastened.

A similar pin 30 connects the side walls 20 and 21 at the other endsthereof. With the top cover A is formed a latch lip 31 that locks withthe pin 30, and with the bottom cover B is formed a latch lip 32 thatalso lockswith the pin-30. The bottom cover B has formed therewith thepartition walls 33 with the flanges 34, that form the compartment 0 withthe cover B. A bottom wall D 15, 1922. Serial No. 586,715. a

bears against the bottom edges of the side walls 20 and 21 and hasformed at its ends the loops 36 and 37 which are respectively clamped tothe pins 26 and 30. When the cover B is in its closed position theflanges 34 bear against the outer face of the bottom wall D.

To the side wall 20 are fastened the barrel shaped end cams 40, eachwith a cam surface 41. S indles 42 and 43 have each one end journa ed inits coacting cam 40 and the other ends of said spindles are journaled inthe wall 21. I

Tubular sharpening rolls 45 are each indicated with the end walls 46 and47 and a disc 48 is fastened to the inner face of each roll. A pin 49extends from each disc 48 and bears against the cam surface 41 of itscoacting cam 40. The end walls 46 are slidably supported upon the cams40 and the end walls 47 are slidably supported on their coactingspindles 42 and 43. A strop 50 is secured to the other cylindricalsurface of each of the sharpening rolls 45. A spur gear 55 is indicatedwith the hub 56, which is fastened to the s indle 42 by means of thescrew 57. A supp emental' hub is indicated at 58 and a web 59 connectsthe hubs 56 and 58. A spur gear 62 is indicated with the teeth 63 and agear segment 64 is formed .with said teeth. The teeth of the segment 64constitute lateral extensions of 'a few of the teeth 63. The spur gear62 has formed therewith the hubs 66 and 68 similar to 56 and 58respectively. The hub 66 is fastened to the spindle 43 by means of thescrew 69. On each of the spindles 42 and 43 is supported a helicalspring 70, one end of each of which bears against one of the discs 48and the other ends against the hubs 56 and 66. The tension of thesprings 70 force the ins 49 against the cam surfaces 41. Pins 71 extendfrom. the hubs 58 and 68 and slidably engage openings in the walls 47 ofthe rolls 45. V H

One member 75 of a ratchet coupling is fastened to the spindle 43. Anoperating arm 76 has attached thereto at one end the operating handle 77and has formed therewith at its other end the ratchet coupling member78. supported on the spindle 43, and can 100 with the member 75.

Anopening 81. with a semi-circular bottom portion 82 is formed in thewall 21, and

ios

The member 78 is detachabli supports the journal bearing 83. A spring 84has one end fastened to the screw pin 85 and its other end bears upagainst the screw pin 86. The spring 84 bears against the top 6 edge ofthe journal bearing 83. An opening 88 similar to 81 is formed in thewall 20. A slidable journal bearing 90 with the side guide lugs 91, thenose 92, and the operating flange 94 is supported in the opening 88.

10 The bearing 90 has formed therein a counjournal bearin 90.

'A blade hol er is indicated in its entirety by the letter E, andcomprises the supporting member 100, with the journal end 101, havingthe flange collar 102, and the journal end 103 with the flange collar104. A spring 107 encircles the journal end 103 and bears between flan ecollar 104' and the bottom of the counter ore 95. Pins 108 extend upfrom the supporting member 100. A pinion 110 is fastened to the journalend 101 and is located in the same plane with the gear segment 64, whichlatter meshes with said pinion when the spur gear 62 is turned. Aclamping member 111' preferably' magne tized and having the latch lug112 and the openings 113 is hinged to the supporting member 100, bymeans of the hinge pin 114. The openings 113 can. register with the pins108. A sprmg is wound around the ends of the hinge pin 114 and isindicated with the members 115 and- 116. The members 115 bear on thesupportingmember 100 and the member 116 bears up against the clampingmember 112, tending to raise the latter. A blade 120 is shown supportedon the supporting member 100, with its openings engaging the pins 108,and the clamping member 111 bears on said blade toe-hold it in place.The openings 113 of the member 111 engage the pins 108. The latch lug112 is shown in engagement with the nose 92 of the bearing 90. When theoperator pulls out the bearing 90, by means of the flange 94, the'nose92 and the lug 112 will be unlocked, and the spring having the members115 and 116 will cause the clamping member 111 to swing up with theblade'120.

-In the com artment C can be located the parts of a sa ety" razor asindicated at 125, 126 and a plurality of blades 127 for the razor.

To operate the razor blade sharpener the slidable journal bearing 90 ispulled out, by

bearing against the inner face of the flange 94. When the nose 92becomes disengaged from the latch lug 112, the clamping member 111swings u under the tension of the s ring having t e members 115 and 116.

he blade 120 is now located upon the supporting member 100, with itsopenings engaging the pins 108. The clamping member 111 is brought toits horizontal position to bear on the said razor blade the openings 113engaging the pins 108. While the member 111 is swung down, the journalbearing 90 is again pulled out, and after the member 111 is in itshorizontal position, the bearing 90 is released and the nose 92 locksthe latch lug 112 of the member 111 in place. The operator next engagesthe ratchet coupling member 7 8'with the member 75, and by means of theoperating handle 77 the spindle 43 is turned. The revolutions of thespindle 43 are transmitted to the spindle 42 through the spur gears 62and 55. The pins 71 revolve with the said spur gears and thereby boththe sharpening. rolls 45 are turned. This causes the strops tosimultaneously sharpen both edges of the blade 120. While the rolls 45are turning they are also reciprocated, by' the coaction of the pins 49and the cam surfaces 41 of the cams 40.

While the spur gear 62 turns, the gear segment 64 is revolved and duringeach revolution of the spur gear 62, the segment 64 meshes with thepinion 110. This causes the pinion 110 tomake a one-half revolution,which is transmitted to the blade holder E, and thereby the blade 120 isturned 180 degrees during each revolution of the sharpening rolls 45,and thereby both sides of each edge of the blade 120 are brought intocontact with the strop 50.

After the rolls 45 have been rotated to sufiiciently sharpen the edgesof the blade 120 the latter is removed from the supporting member100,'by raising the clamping member 111. The member 111 is raised bypulling out the .slidable journal bearing 90 to unlock the nose 92 fromthe latch lug 112, when the spring having the members 115 and 116 willautomatically raise the mem-- her 111, and the latter on account ofbeing magnetized will raise the blade, which can then be detached.

Various modifications may the invention and the present exemplificationis to be taken as illustrative and not limitative thereof.

Having described my invention what I desire to secure by Letters Patentand claim 1. In a razor blade sharpener the combination of a casing withan opening in each side wall thereof, a journal bearin ported in each ofsaid openings, exible means bearing on the journal bearings, a bladeholder journaled in said bearings, means to clamp a blade to the bladeholder, a pair of spindles supported in the casing below the bladeholder, a sharpening roll mounted on each spindle, and means tosimultaneously actuate the shar ening rolls and coacting means between te sharpenbe made in ing rolls and the blade holder to actuate thelatter.

2. In a razor blade sharpener the combination of a casing with anopening in each of its side walls, a journal bearing supported in eachof said openings, a springwith one end of each fastened to one of theside walls bearing on its adjacent journal'bearing, a blade holderjournaled in said bearings, the holder comprising a supporting memberand a clamping member hinged thereto to clamp a blade between them,means to lock the free end of the clamping member to the supportingmember, a spring bearing between the members, sharpening rolls below andsupporting the cutting edges of the blade, the springs of said journalbearings causing the blade to be maintained in yielding contact with thesharpening rolls, means to turn the-sharpening rolls, means toreciprocate the sharpening rolls and means to intermittently cause theblade holder with its blade to make half turns for each revolution ofthe sharpening rolls to bring both sides of said blade into contact withthe sharpening rolls.

3. In a razor blade sharpener the combination of a casing with anopening in each side wall thereof, a journal bearing supported in eachof said openings, flexible means bearing on the journal bearings, ablade holder journaled in ,said bearings, means to detachably clamp ablade to the blade holder, a pair of spindles journaled in thecasingbelow the blade holder, tubular sharpening rolls with end wallsencircling said spindles and coaxial therewith, one of said end walls ofeach 7 roll slidably supported "on each spindle, a barrel shaped end camfor each roll and extending through the other end wall of the roll, saidcam fastened to the adjacent side wall of the casing, a disc secured tothe inner face of each tubular roll, a pin,

extending from each disc bearing on the cam surface of its cam, a spurgear fastened to each spindle, a spring encircling each spindle with itsends bearing against its adjacent disc and the hub of its spur gear' onthe spindle, the said gears meshing with each other, a gear segmentformed with one of said spur gears, a pinion supported on the holderadapted to mesh with said gear segment, means to turn one of the spurgears, the rotation of the gear with the gear segment causing saidspindle to make a half turn for each revolution of its spur gear and astrop for each roll.

Signed at the borough of Manhattan, city of New York, in the county ofNew York and State of New York, his lOthday of February A. D. 1922.

JOHN HOLTZMAN.

